JPS6056783B2 - Cubic boron nitride-based ultra-high pressure sintered material for cutting tools - Google Patents
Cubic boron nitride-based ultra-high pressure sintered material for cutting toolsInfo
- Publication number
- JPS6056783B2 JPS6056783B2 JP59281709A JP28170984A JPS6056783B2 JP S6056783 B2 JPS6056783 B2 JP S6056783B2 JP 59281709 A JP59281709 A JP 59281709A JP 28170984 A JP28170984 A JP 28170984A JP S6056783 B2 JPS6056783 B2 JP S6056783B2
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- JP
- Japan
- Prior art keywords
- powder
- sintered material
- cbn
- boron nitride
- cutting
- Prior art date
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Description
【発明の詳細な説明】
〔産業上の利用分野〕
この発明は、すぐれた耐摩耗性と靭性とを兼ね備え、さ
らにすぐれた耐溶着性と耐熱衝撃性を有し、特にＮｉ基
またはＣｏ基スーパーアロイや高硬度鋼などの難削材の
切削に切削工具として用いるのに適した立方晶窒化硼素
基超高圧焼結材料（以下、ＣＢＮ基焼結材料と略記する
）に関するものである。Detailed Description of the Invention [Field of Industrial Application] The present invention has excellent wear resistance and toughness, as well as excellent welding resistance and thermal shock resistance. This invention relates to a cubic boron nitride-based ultra-high pressure sintered material (hereinafter abbreviated as CBN-based sintered material) suitable for use as a cutting tool for cutting difficult-to-cut materials such as alloys and high-hardness steel.
近年、切削工具としてＣＢＮ基焼結材料が使用される傾
向にある。In recent years, there has been a tendency for CBN-based sintered materials to be used as cutting tools.
このＣＢＮ基焼結材料は、分散相を形成する立方晶窒化
硼素（以下ＣＢＮで示す）粒子の結合相によつて２種に
大別されている。すなわち、その１つが結合相を鉄族金
属、あるいは鉄族金属とＡｌなどを主成分とする金属で
構成するものであり、他のものが窒化チタン、炭化チタ
ン、窒化アルミニウム、または酸化アルミニウムなどを
主成分として含有するセラミック系化合物で結合相を構
成した、も゛’のである。〔発明が解決しようとする問
題点〕しかし、前者においては、上記のように結合相−
が金属であるために高靭性をもつ反面、高温で軟化しや
すく、したがつてこれを多大な熱発生を伴う苛酷な切削
条件で使用した場合には耐摩耗性および耐溶着性不足を
きたして十分満足する切削性能の発揮は期待できず、熱
発生の小さい条件でしノか使用することができないもの
である。This CBN-based sintered material is roughly divided into two types depending on the binder phase of cubic boron nitride (hereinafter referred to as CBN) particles forming the dispersed phase. That is, one of them is one in which the binder phase is composed of an iron group metal or a metal whose main components are an iron group metal and Al, and the other is one in which the binder phase is composed of a metal such as titanium nitride, titanium carbide, aluminum nitride, or aluminum oxide. The binder phase is composed of a ceramic compound contained as the main component. [Problem to be solved by the invention] However, in the former case, as mentioned above, the bonded phase -
Although it has high toughness because it is a metal, it easily softens at high temperatures, and therefore, when used under harsh cutting conditions that generate a large amount of heat, it may lack wear resistance and welding resistance. It cannot be expected to exhibit sufficiently satisfactory cutting performance, and it cannot be used under conditions where heat generation is small.
一方、後者においては、上記のように結合相がセラミッ
ク系化合物で構成されているために、耐摩耗性および耐
溶着性のすぐれたものになつているが、反面靭性不足と
なるのを避けることができず、例えばダイス鋼などの高
硬度鋼のフライス切削などの刃先に大きな衝撃性の加わ
る切削条件下ではピッチングや欠損を起し易いなどの問
題点がある。〔問題点を解決するための手段〕そこで、
本発明者等は、上述のような観点から、耐摩耗性および
靭性にすぐれ、かつ耐溶着性および耐熱衝撃性にもすぐ
れたＣＢＮ基焼結材料を得べく研究を行なつた結果、Ｃ
ＢＮ基焼結材料を、重量％で、Ｔｉの炭化物、窒化物、
および炭窒化物、Ｗの炭化物、並びにこれらの２種以上
の固溶体（以下、それぞれＴｌＣ．．ＴｉＮ．．ＴｌＣ
Ｎ，．ＷＣｌ（ＴｉｌＷ）Ｃ１および（Ｔｉ．．Ｗ）Ｃ
Ｎで示し、かつこれらを総称して「ＴｉとＷの炭・窒化
物」という）のうちの１種または２種以上：１５〜４５
％、硼化アルミニウム（以下、ＡｌＢｘで示す）：３〜
１５％、Ｐｄ：２〜８％、
酸化アルミニウム（以下、Ａｌ２Ｏ３で示す）、または
Ａｌ２Ｏ３と窒化アルミニウム（以下、ＡＩＮで示す）
：５〜１０％、ＮｉおよびＣＯのうちの１種または２種
：２〜６％、を含有し、残りがＣＢＮと不可避不純物か
らなる組成で構成すると、この結果のＣＢＮ基焼結材料
は、すぐれた耐摩耗性、靭性、耐溶着性、および耐熱衝
撃性をすべて備えたものとなり、したがつて、これを多
大な熱発生を伴う切削条件や、刃先ｊに大きな衝撃性の
加わる切削条件で、切削工具として使用した場合にも、
すぐれた切削性能を示すという知見を得たのである。On the other hand, in the latter case, as the binder phase is composed of a ceramic compound as mentioned above, it has excellent wear resistance and welding resistance, but on the other hand, it is necessary to avoid insufficient toughness. For example, under cutting conditions in which a large impact is applied to the cutting edge, such as when milling high-hardness steel such as die steel, pitting and chipping are likely to occur. [Means to solve the problem] Therefore,
From the above-mentioned viewpoints, the present inventors conducted research to obtain a CBN-based sintered material that has excellent wear resistance and toughness, as well as excellent welding resistance and thermal shock resistance.
BN-based sintered material, by weight%, Ti carbide, nitride,
and carbonitrides, W carbides, and solid solutions of two or more of these (hereinafter referred to as TlC..TiN..TlC, respectively).
N,. WCl(TilW)C1 and (Ti..W)C
One or more of the following (represented by N and collectively referred to as "Ti and W carbon/nitride"): 15-45
%, aluminum boride (hereinafter referred to as AlBx): 3~
15%, Pd: 2-8%, aluminum oxide (hereinafter referred to as Al2O3), or Al2O3 and aluminum nitride (hereinafter referred to as AIN)
When the resulting CBN-based sintered material contains: 5 to 10%, one or two of Ni and CO: 2 to 6%, and the remainder consists of CBN and unavoidable impurities, the resulting CBN-based sintered material is It has excellent wear resistance, toughness, welding resistance, and thermal shock resistance. Therefore, it can be used under cutting conditions that generate a large amount of heat or that imposes a large impact on the cutting edge. , even when used as a cutting tool,
They obtained the knowledge that it shows excellent cutting performance.
この発明は、上記知見にもとづいてなされたものであつ
て、以下に成分組成を上記の通りに限定３した理由を説
明する。This invention was made based on the above findings, and the reason why the component composition was limited as described above will be explained below.
（ａ）Ｔｉ＜５Ｗの炭・窒化物
これらの成分には、材料の耐摩耗性および耐溶着性を改
善する作用があるが、その含有量が１５％未満ては前記
作用に所望の効果が得られ４ず、一方４５％を越えて含
有させると靭性が劣化するようになることから、この含
有量を１５〜４５％と定めた。(a) Carbon/nitride with Ti<5W These components have the effect of improving the wear resistance and welding resistance of the material, but if their content is less than 15%, the desired effect will not be achieved. On the other hand, if the content exceeds 45%, the toughness deteriorates, so this content was set at 15 to 45%.
（ｂ）ＡｌＢｘ
この成分には、焼結時にＣＢＮ粒子およびＴｉとＷの炭
・窒化物粒子の周辺に廻り込んで、これら両粒子と強固
に結合し、この結果として材料の強度と耐熱衝撃性を向
上させ、さらに材料の硬さを向上させ、もつて材料の耐
摩耗性を改善する作用があるが、その含有量が３％未満
では前記作用に所望の効果が得られず、一方１５％を越
えて含有させると材料に脆化傾向が現われるようになる
ことから、その含有量を３〜１５％と定めた。(b) AlBx This component wraps around CBN particles and Ti and W carbon/nitride particles during sintering, and forms a strong bond with both particles, resulting in material strength and thermal shock resistance. However, if the content is less than 3%, the desired effect cannot be obtained; on the other hand, if the content is less than 3%, If the content exceeds 3%, the material tends to become brittle, so the content was set at 3% to 15%.
ｃ）Ｐｄ
この成分には、材料の靭性を著しく向上させ、かつ高温
耐酸化性および耐熱衝撃性を一段と向上させる作用があ
るが、その含有量が２％未満では前記作用に所望の効果
が得られず、一方８％を越えて含有させると、硬さが低
下して耐摩耗性が低下するようになることから、その含
有量を２〜８％と定めた。c) Pd This component has the effect of significantly improving the toughness of the material and further improving high-temperature oxidation resistance and thermal shock resistance, but if its content is less than 2%, the desired effect will not be achieved. On the other hand, if the content exceeds 8%, the hardness and wear resistance will decrease, so the content was set at 2 to 8%.
ｄ）Ａｌ２Ｏ３またはＡＩ２Ｏ３＋ＡｌＮ，Ａｌ２Ｏ３
には、材料の耐溶着性を一段と向上させる作用があり、
したがつて、例えば多大な熱発生を伴う著しく苛酷な切
削に用いた場合にすぐれた性能を発揮せしめる作用があ
るが、その含有量が５％未満ては前記作用に所望の向上
効果が得られず、一方１０％を越えて含有させると、焼
結性の劣化をもたらし、材料中にミクロボイドが発生し
やすくなることから、その含有量を５〜１０％と定めた
。d) Al2O3 or AI2O3+AlN, Al2O3
has the effect of further improving the welding resistance of the material.
Therefore, it has the effect of exhibiting excellent performance when used, for example, in extremely severe cutting that involves a large amount of heat generation, but if its content is less than 5%, the desired effect of improving the above effect cannot be obtained. On the other hand, if the content exceeds 10%, the sinterability deteriorates and microvoids are likely to occur in the material, so the content was set at 5 to 10%.
また、ＡｌＮ成分は、Ａｌ２Ｏ３成分と同等の作用効果
をもつので、Ａｌ２Ｏ３の一部をＡｌＮで置換して共存
含有させても、Ａｌ２Ｏ３成分の単独含有の場合と同様
な作用効果が得られる。Furthermore, since the AlN component has the same effect as the Al2O3 component, even if a part of Al2O3 is replaced with AlN and the AlN component is co-contained, the same effect as when the Al2O3 component is contained alone can be obtained.
〕）ＮｉおよびＣＯ
これらの成分には、焼結性を一段と改善し、かつＰｄと
の共存において靭性を一段と向上させる作用があるが、
その含有量が２％未満ては所望の靭性向上効果が得られ
ず、一方６％を越えて含有させると、材料の硬さが低下
し、耐摩耗性がぞこなわれるようになることから、その
含有量を２〜６％と定めた。]) Ni and CO These components have the effect of further improving sinterability and further improving toughness when coexisting with Pd.
If the content is less than 2%, the desired effect of improving toughness cannot be obtained, while if the content exceeds 6%, the hardness of the material decreases and the wear resistance is improved. , its content was determined to be 2 to 6%.
なお、この発明のＣＢＮ基焼結材料は、通常の召高圧焼
結法、すなわち、まず原料粉末として、′．ＢＮ粉末、
ＴｉＣ粉末、ＴｌＮ粉末、ＴｌＣＮ粉末、ＷＣ）末、（
Ｔｌ．Ｗ）Ｃ粉末、（Ｔｌ．．Ｗ）ＣＮ粉末、ＡｌＢ巾
末、Ｐｄ粉末、ＡｌＮ粉末、Ｎ２Ｏ３粉末、Ｎｉ粉末、
ＣＯ粉末、およびＮｉ−ＣＯ合金粉末を用意し、これら
原料粉末のうちから適宜選択して所定の配合組成に配合
し、混合し、ついで混合粉末の状態あるいは圧粉体の状
態で、必要に応じてＷＣ基超硬合金製プレートなどと一
緒に、金属容器に挿入し、これを８００〜１２００℃の
温度に加熱して真空脱ガスを行なつて封入し、引続いて
この封入容器を、例えば特公昭３６−２３４６３号公報
に記載されるような超高圧高温発生装置に装着し、圧力
および温度を上げ、圧力ニ４０〜７０Ｋｂ１温度：１２
００〜１６００′Ｃの範囲内の圧力および温度に数分〜
数１紛間保持した後、冷却し、最終的に圧力を解放する
ことからなる基本的工程によつて製造することができる
。The CBN-based sintered material of the present invention can be produced using the usual high-pressure sintering method, that is, first, as a raw material powder, '. BN powder,
TiC powder, TlN powder, TlCN powder, WC) powder, (
Tl. W) C powder, (Tl..W) CN powder, AlB powder, Pd powder, AlN powder, N2O3 powder, Ni powder,
Prepare CO powder and Ni-CO alloy powder, select them appropriately from these raw material powders, blend them into a predetermined composition, mix them, and then process them as needed in the form of mixed powder or compacted powder. This is inserted into a metal container together with a WC-based cemented carbide plate, etc., heated to a temperature of 800 to 1200°C, vacuum degassed, and sealed. It is attached to an ultra-high pressure and high temperature generator as described in Japanese Patent Publication No. 36-23463, and the pressure and temperature are increased to a pressure of 40 to 70 Kb1 temperature: 12
00 to 1600'C for several minutes to a pressure and temperature within the range
It can be produced by a basic process consisting of holding the powder for several minutes, cooling it, and finally releasing the pressure.
また、この発明のＣＢＮ基焼結材料を切削工具として実
用に供する場合、単独で、あるいはＷＣ基超硬合金やサ
ーメットなどの高剛性材料と複合した状態で、スローア
ウエイチツプとして用いても、さらにこれらのチップを
ＷＣ基超硬合金や焼入れ鋼などのホルダの先端部にろう
付けにより取り付けた状態で用いてもよい。Furthermore, when the CBN-based sintered material of the present invention is put to practical use as a cutting tool, it can be used alone or in combination with a high-rigidity material such as WC-based cemented carbide or cermet as a throw-away chip. These tips may be used in a state where they are attached by brazing to the tip of a holder made of WC-based cemented carbide, hardened steel, or the like.
つぎに、この発明のＣＢＮ基焼結材料を実施例により具
体的に説明する。Next, the CBN-based sintered material of the present invention will be specifically explained using examples.
実施例
原料粉末として、平均粒径：３μｍを有するＣＢＮ粉末
、いずれも１μｍの平均粒径を有するＴｌＣ粉末、Ｔｌ
Ｎ粉末、ＴｌＣＯ．５ＮＯ．５粉末、ＷＣ粉末、（Ｔｌ
Ｏ・６Ｗ０・４）Ｃ粉末）および（ＴＯ・６Ｗ０・４）
ＣＯ・７Ｎ。Examples of raw material powders include CBN powder with an average particle size of 3 μm, TlC powder, and TlC powder with an average particle size of 1 μm.
N powder, TlCO. 5NO. 5 powder, WC powder, (Tl
O・6W0・4)C powder) and (TO・6W0・4)
CO・7N.
．３粉末、さらに平均粒径：０．７μｍ（７）ＡｌＢ２
粉末およびＡｌＢｌ２粉末、同１μｍ（７）Ｐｄ粉末、
Ｎ】粉末、およびＣＯ粉末、同１．５μｍ（７）ＡｌＮ
粉末およびＡｌ２Ｏ３粉末を用意し、これら原料粉末を
、それぞれ第１表に示される配合組成に配合し、通常の
条件でボールミルにて混合した後、２ｔ０ｎＩａｉの圧
力で直径：１３ｗ！Ｆｔ（りｘ厚さ：１．５ｗ！ｎの寸
法をもつた円板状圧粉体に成形し、ついでこれらの圧粉
体を、それぞれ基材となるＷＣ：８４％、ＣＯ：１６％
からなる配合組成を有し、かつ直径：１３７０７７！φ
×厚さ：３Ｔｆ＄ｔの寸法をもつた円板状圧粉体と重ね
合せた状態で、公知の超高圧高温発生装置の容器に挿入
し、圧力ニ５０Ｋｂ１温度：１５００℃、保持時間：５
分の条件で超高圧焼結することによつて、実質的に配合
組成と同一の成分組成をもつた本発明ＣＢＮ基焼結材料
１〜２０および比較ＣＢＮ基焼結材料１〜１０をそれぞ
れ製造した。なお、比較ＣＢＮ基焼結材料１〜１０は、
いずれも構成成分のうちのいずれかの成分含有量（第１
表に※印を付す）がこの発明の範囲から外れた組成をも
つものである。ついで、この結果得られた本発明ＣＢＮ
基焼結・材料１〜２０および比較ＣＢＮ基焼結材料１〜
１０について、耐摩耗性を評価する目的でビッカース硬
さ（荷重：５ｋ９）を測定し、また靭性を評価する目的
で、ビッカース硬さ測定後の圧痕の先端から発生した亀
裂長さにもとづいて破壊靭性値Ｋｃを・求め、さらに耐
摩耗性、耐溶着性、および耐熱衝撃性を評価する目的で
、被削材：タイス鋼（ＳＫＤ−１１、硬さ：ＨＲＣ６Ｏ
）、切込み：０．２７ｒ１ｍ１送りニ０．１ｗｎ１ｒｅ
ｖ，、切削速度：６０ｎ−１，Ｉｍｊｎ１切削油：使用
せずの条件で切削試験を行ない、切刃の逃げノ面摩耗が
０．１７７！７７！に至るまでの切削時間を測定した。．． 3 powder, further average particle size: 0.7 μm (7) AlB2
Powder and AlBl2 powder, 1 μm (7) Pd powder,
N] powder, and CO powder, 1.5 μm (7) AlN
Powder and Al2O3 powder were prepared, and these raw material powders were blended into the composition shown in Table 1, mixed in a ball mill under normal conditions, and then heated to a diameter of 13w at a pressure of 2t0nIai! Ft(ri x thickness: 1.5w!n) is formed into a disc-shaped powder compact, and then these compacts are made into base materials of WC: 84% and CO: 16%.
It has a composition consisting of, and diameter: 137077! φ
×Thickness: 3Tf$t stacked with a disk-shaped powder compact, inserted into a container of a known ultra-high pressure and high temperature generator, pressure: 50Kb1, temperature: 1500℃, holding time: 5
CBN-based sintered materials 1 to 20 of the present invention and comparative CBN-based sintered materials 1 to 10 having substantially the same composition as the compounded composition were produced by ultra-high pressure sintering under conditions of did. In addition, comparative CBN-based sintered materials 1 to 10 are as follows:
In both cases, the content of one of the constituent components (first
Those marked with * in the table have compositions that are outside the scope of this invention. Then, the resulting CBN of the present invention
Based sintered materials 1-20 and comparative CBN-based sintered materials 1-
Regarding No. 10, the Vickers hardness (load: 5k9) was measured for the purpose of evaluating wear resistance, and the fracture was determined based on the length of the crack that occurred from the tip of the indentation after measuring the Vickers hardness for the purpose of evaluating the toughness. For the purpose of determining the toughness value Kc and further evaluating wear resistance, welding resistance, and thermal shock resistance, work material: Tice steel (SKD-11, hardness: HRC6O) was used.
), depth of cut: 0.27r1m1 feed 20.1wn1re
v, Cutting speed: 60n-1, Imjn1 Cutting oil: A cutting test was conducted under the conditions of not using, and the wear on the relief face of the cutting edge was 0.177!77! The cutting time was measured.
これらの結果を第１表に合せて示した。〔発明の効果〕
第１表に示される結果から、本発明ＣＢＮ基焼結材料１
〜２０は、いずれもすぐれた耐摩耗性、靭性、耐溶着性
、および耐熱衝撃性を有し、したがつて、これらの特性
が要求される難削材の切削においてもすぐれた切削性能
を発揮するのに対して、比較ＣＢＮ基焼結材料１〜１０
に見られるように、構成成分のうちのいずれかの成分含
有量がこの発明の範囲から外れると、前記特性のうち少
なくともいずれかの特性が劣つたものとなり、この結果
切削性能の劣つたものになることが明らかである。These results are also shown in Table 1. 〔Effect of the invention〕
From the results shown in Table 1, the CBN-based sintered material 1 of the present invention
~20 all have excellent wear resistance, toughness, welding resistance, and thermal shock resistance, and therefore exhibit excellent cutting performance even when cutting difficult-to-cut materials that require these properties. In contrast, comparative CBN-based sintered materials 1 to 10
As can be seen in the above, if the content of any of the constituent components deviates from the range of the present invention, at least one of the above characteristics will be inferior, resulting in inferior cutting performance. It is clear that
上述のように、この発明のＣＢＮ基焼結材料は、すぐれ
た耐摩耗性と靭性を具備し、さらにすぐれこれらの特性
が要求されるＮｉ基あるいはＣＯ基スーパーアロイや高
硬度鋼などの難削材の切削に切削工具として用いた場合
、きわめてすぐれた切削性能を発揮するものてあり、さ
らに軸受や線引ダイスなどの耐摩耗工具として用いても
すぐれた性能を長期間に亘つて確保することができるな
ど工業上有用な特性を有するのである。As mentioned above, the CBN-based sintered material of the present invention has excellent wear resistance and toughness, and is suitable for use in difficult-to-cut materials such as Ni-based or CO-based superalloys and high-hardness steels that require these properties. When used as a cutting tool to cut materials, it exhibits extremely excellent cutting performance, and even when used as a wear-resistant tool for bearings, wire drawing dies, etc., it maintains excellent performance over a long period of time. It has industrially useful properties such as the ability to
Claims (1)
物、並びにこれらの２種以上の固溶体のうちの１種また
は２種以上：１５〜４５％、硼化アルミニウム：３〜１
５％、 Ｐｄ：２〜８％、 酸化アルミニウム、または酸化アルミニウムと窒化アル
ミニウム：５〜１０％、ＮｉおよびＣｏのうちの１種ま
たは２種：２〜６％、を含有し、残りが立方晶窒化硼素
と不可避下純物からなる組成（以上重量％）を有するこ
とを特徴とする切削工具用立方晶窒化硼素基超高圧焼結
材料。[Claims] 1 Carbides, nitrides, and carbonitrides of Ti, carbides of W, and one or more solid solutions of two or more of these: 15 to 45%, aluminum boride: 3-1
5%, Pd: 2-8%, aluminum oxide or aluminum oxide and aluminum nitride: 5-10%, one or two of Ni and Co: 2-6%, and the rest is cubic crystal. A cubic boron nitride-based ultra-high-pressure sintered material for cutting tools, characterized by having a composition (weight %) consisting of boron nitride and unavoidable pure substances.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59281709A JPS6056783B2 (en) | 1984-12-25 | 1984-12-25 | Cubic boron nitride-based ultra-high pressure sintered material for cutting tools |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59281709A JPS6056783B2 (en) | 1984-12-25 | 1984-12-25 | Cubic boron nitride-based ultra-high pressure sintered material for cutting tools |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP57183835A Division JPS6023181B2 (en) | 1982-10-20 | 1982-10-20 | Cubic boron nitride-based ultra-high pressure sintered material for cutting tools |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS60187659A JPS60187659A (en) | 1985-09-25 |
| JPS6056783B2 true JPS6056783B2 (en) | 1985-12-11 |
Family
ID=17642886
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP59281709A Expired JPS6056783B2 (en) | 1984-12-25 | 1984-12-25 | Cubic boron nitride-based ultra-high pressure sintered material for cutting tools |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6056783B2 (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0256829B1 (en) * | 1986-08-11 | 1994-03-16 | De Beers Industrial Diamond Division (Proprietary) Limited | Abrasive and wear resistant material |
| US5603075A (en) * | 1995-03-03 | 1997-02-11 | Kennametal Inc. | Corrosion resistant cermet wear parts |
| GB201002372D0 (en) * | 2010-02-12 | 2010-03-31 | Element Six Production Pty Ltd | A superhard multiphase material and method of using same |
| CN110257681B (en) * | 2019-06-20 | 2020-05-19 | 中国有色桂林矿产地质研究院有限公司 | Polycrystalline cubic boron nitride composite sheet and preparation method thereof |
| CN111635234B (en) * | 2020-06-10 | 2022-05-24 | 中国有色桂林矿产地质研究院有限公司 | Polycrystalline cubic boron nitride composite sheet and preparation method and application thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5377811A (en) * | 1976-12-21 | 1978-07-10 | Sumitomo Electric Ind Ltd | Sintered material for tools of high hardness and its preparation |
| JPS55126581A (en) * | 1979-03-19 | 1980-09-30 | De Beers Ind Diamond | Abrasive molded body and its manufacture |
| JPS55130859A (en) * | 1979-04-02 | 1980-10-11 | Sumitomo Electric Industries | Sintered body with high hardness for cuttinggworking cast iron and its preparation |
| JPS568914A (en) * | 1979-07-04 | 1981-01-29 | Toshiba Corp | Low-frequency dispersed type delay line |
-
1984
- 1984-12-25 JP JP59281709A patent/JPS6056783B2/en not_active Expired
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5377811A (en) * | 1976-12-21 | 1978-07-10 | Sumitomo Electric Ind Ltd | Sintered material for tools of high hardness and its preparation |
| JPS55126581A (en) * | 1979-03-19 | 1980-09-30 | De Beers Ind Diamond | Abrasive molded body and its manufacture |
| JPS55130859A (en) * | 1979-04-02 | 1980-10-11 | Sumitomo Electric Industries | Sintered body with high hardness for cuttinggworking cast iron and its preparation |
| JPS568914A (en) * | 1979-07-04 | 1981-01-29 | Toshiba Corp | Low-frequency dispersed type delay line |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS60187659A (en) | 1985-09-25 |
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